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UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following assumptions :
1. Failure occurs on a plane surface.
2. Wall is smooth but not necessarily vertical.
3. Failure wedge is a rigid body.
Coulomb's theory of earth pressure is based on assumptions

A 1, 2 and 3

B 1 and 3

C 1 and 2

D 2 and 3

ANS:B - 1 and 3

In Coulomb's theory wall is considered rough.

Correct answer is B.